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Side by side

Biolage Biolage Full Rescue Shampoo vs Biolage Hydra Source Shampoo for Dry Hair

89% function match · 10 of the 13 functions we compared match Formula overlap 28%. Biolage Biolage Full Rescue Shampoo and Biolage Hydra Source Shampoo for Dry Hair share 2 ingredients among each other's most prominent.

Based on your consultation

Which of these fits your hair?

We check your pattern, moisture need, scalp, fragrance tolerance, weight sensitivity and more against each formula — and say which one lines up.

Your profile at a glance

  • Your answers appear here
  • Your answers appear here
  • Your answers appear here
  • Your answers appear here

When each one is the right call

What each formula is built for, from its own ingredient list.

  • Biolage Full Rescue Shampoo — protein-sensitive hair
  • Hydra Source Shampoo for Dry Hair — protein-sensitive hair

Side by side

Every trait, aligned

One row per trait, read from each product’s own ingredient list and record. A dash means we have not researched that field for that product — it is not a “no”.

Trait
Biolage Biolage Full Rescue Shampoo — 33.8 oz container Biolage

Biolage Full Rescue Shampoo

  • Shampoo
  • Salon
  • Silicone-free
  • Protein-free
Biolage Hydra Source Shampoo for Dry Hair — 13.5 oz container Biolage

Hydra Source Shampoo for Dry Hair

  • Shampoo
  • Salon
  • Silicone-free
  • Protein-free
Price, size & price per ounce
about $56 33.8 oz · $1.66/oz
$21–26 13.5 oz · $1.78/oz

Compared at different sizes — 33.8 oz against 13.5 oz. Per-ounce prices favour the larger bottle.

Value / price positioning
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 55% of the 817 shampoos we’ve priced
Upper-mid price for a shampoo $$$$$ Salon tier · costs more than 57% of the 817 shampoos we’ve priced
Best for hair types
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
All types Nothing in the formula or the claims narrows this to one pattern. Your hair
Moisture level Differs
High Humectants near the top — water-binding is a headline mechanism here. Your hair
Moderate Humectants in the working part of the formula. Your hair
Cleansing strength Same
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Strong Removes oil, buildup, and most residue — a reset wash. Your hair
Slip / detangling Same
Moderate Conditioning agents are present, lower in the list. Your hair
Moderate Conditioning agents are present, lower in the list. Your hair
Weight on hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Light Water-first and light: unlikely to flatten fine hair. Your hair
Fragrance
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Prominent Fragrance sits in the first eight ingredients — a larger share of the formula. Your hair
Protein Same
None No protein or amino acids in the list. Your hair
None No protein or amino acids in the list. Your hair
Silicone / wax buildup Same
None Nothing here needs a detergent wash to remove. Your hair
None Nothing here needs a detergent wash to remove. Your hair
Clarifying wash needed
Low Your hair
Low Your hair
Expected lather Same
High Thick foam that spreads quickly through the hair. Your hair
High Thick foam that spreads quickly through the hair. Your hair
Scalp active Same
None No over-the-counter scalp active. Your hair
None No over-the-counter scalp active. Your hair
Hard-water defence Same
None No chelating agent in the list. Your hair
None No chelating agent in the list. Your hair
Formula completeness
out of 10
Complete for its job
out of 10
Complete for its job
Who should choose this
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
  • Protein-sensitive hairthat stiffens when protein is added
  • Fast-oiling scalpsthat need a real reset wash
  • Fine hairthat flattens under most products
  • Silicone-free routinesno silicones appear in the list
Why you might skip it
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Very dry or damaged hairit contains fast-drying alcohol
  • Scents bother youthis product carries a scent
  • Sulfate-free routinesit uses a sulfate detergent
  • Dry or damaged haira strong detergent system strips as it cleans
from the formula stated by the brand reported by reviewers Scale: 1 dot low · 5 dots high, within this product type.
More facts about each one
Type
Shampoo
Shampoo
Line
Full Rescue
Hydra Source
Where to buy
Target · Salons · Brand website
Salons · Ulta
Free of
  • silicone-free
  • protein-free
  • silicone-free
  • protein-free
Scent
Scented, not described
Scented, not described

Facts as we recorded them. A dash means we have not researched that field for that product — it is not a "no".

The bottom line

The bottom line depends on your hair

Which of these two suits you is a question about your hair, not about them. The consultation answers it — and tells you what your routine needs around it.

Take the consultation

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The detail behind the table

Where the readings above come from: the ingredient lists themselves, each brand’s claims checked against them, what owners report, and cost per ounce in context.

Shared and distinct ingredients

Shared and distinct ingredients

Computed from the ingredient lists as printed. "Shared" means both lists carry it; where it sits on each label is stated, because position is what tells you how much.

What both formulas carry

IngredientBiolage Full Rescue ShampooHydra Source Shampoo for Dry Hair
Water
Neutral
#1Leading
#1Leading
Cocamidopropyl Betaine
Cleanses
#3Leading
#4Supporting
Sodium Chloride
Stabilizes
#4Supporting
#5Supporting
Propylene Glycol
Moisturizes
#5Supporting
#21Below the 1% line
Fragrance
Fragrance
#6Below the 1% line
#8Below the 1% line
Hexylene Glycol
Moisturizes
#7Below the 1% line
#7Supporting
Citric Acid
pH balancer
#8Below the 1% line
#9Below the 1% line
Salicylic Acid
Active
#16Below the 1% line
#12Below the 1% line
Limonene
Fragrance
#23Below the 1% line
#16Below the 1% line
Hexyl Cinnamal
Fragrance
#25Below the 1% line
#17Below the 1% line
Coumarin
Fragrance
#26Below the 1% line
#19Below the 1% line

What only one of them carries

Biolage Full Rescue Shampoo

Hydra Source Shampoo for Dry Hair

Full ingredient list — Biolage Full Rescue Shampoo (29)
Full ingredient list — Hydra Source Shampoo for Dry Hair (29)

Claims check

What each brand says, against what each formula shows

Claims are quoted from each brand. We only mark one supported, partly supported, or conflicting when that product’s ingredient list actually speaks to it.

VerdictsBiolage Full Rescue ShampooHydra Source Shampoo for Dry Hair
Supported
0
0
Partly supported
0
0
Stated by brand
3
2
Potential conflict
0
0

Biolage Full Rescue Shampoo

  • Instantly strengthens hairStated by brandCan’t be confirmed from label.
  • Densifies hair lengths for a thicker appearanceStated by brandCan’t be confirmed from label.
  • +74% resistance to hair fall due to breakage* (from brushing, vs non-conditioning shampoo)Stated by brandOnly the brand’s testing shows this.

Hydra Source Shampoo for Dry Hair

  • Gently cleanses dry, tired hair without stripping it of its natural oilsStated by brandCan’t be confirmed from label.
  • Providing 6x more hydration after one useStated by brandOnly the brand’s testing shows this.

What owners say

What people report

Recurring themes our researchers wrote in their own words from sourced reviews. We do not store or scrape star ratings, and we never balance one product’s themes against another’s by inventing them.

Both praised for how it cleanses. Biolage Biolage Full Rescue Shampoo draws complaints about dryness; Biolage Hydra Source Shampoo for Dry Hair draws complaints about weight.

Biolage Full Rescue Shampoo

Some reviewers separately praise the gentle, balanced cleansing and noticeable softness after use, independent of the Full Density comparison.

reviewers with no stated prior-formula history

Other reviewers call it a holy-grail product used together with the matching conditioner, describing noticeably stronger, fuller-looking hair.

reviewers pairing it with the Full Rescue conditioner

Multiple reviewers who were loyal users of the discontinued Full Density line say the Full Rescue replacement feels drying and does not perform the same way for them.

longtime former Full Density buyers

A few reviewers report noticeably increased hair shedding/fall after switching to this shampoo.

no specific hair type identified in these reviews

Hydra Source Shampoo for Dry Hair

Improved shine and bounce reported after regular use

Pleasant scent and good lather called out frequently

Thorough cleansing while still leaving hair feeling moisturized

Some reviewers with fine or already-oily hair report a greasy, coated feeling

fine/low-porosity hair reviewers

Price check

Cost per ounce, in context

Cost per ounce against every product of this type we have priced, each at the size it is most often sold in. Value labels are computed from that percentile and from how many products that do the same job cost less; they are comparisons, not judgements about a brand.

$1.66/oz vs $1.78/oz — within about the same cost per ounce.

$0.00/oz median $1.47/oz $17.29/oz $1.66/oz Biolage Full Rescue Shampo $1.78/oz Hydra Source Shampoo for D

Every mark sits on one distribution because these are compared against the same set: 817 shampoos with a computable unit price.

Value readBiolage Full Rescue ShampooHydra Source Shampoo for Dry Hair
Label
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.
Upper-mid price for a shampooSits in the middle of the range for shampoos per ounce.

Computed from cost per ounce against every product of this type we have priced, and from how many products that do the same job cost less. It is a comparison, not a judgement about the brand.

Compare with something else

Close formulas to each of these, as their own comparison pages.

Biolage Full Rescue Shampoo vs American Crew Daily Cleansing Shampoo for MenAmerican Crew · 96% function matchHydra Source Shampoo for Dry Hair vs Wonder Curl ShampooFanola · 100% function matchBiolage Full Rescue Shampoo vs Acidic Grow Full System Densifying ShampooRedken · 96% function matchHydra Source Shampoo for Dry Hair vs L'Oreal Paris Elvive Hyaluron Pure Purifying Shampoo for Oily HairL'Oreal Paris Elvive · 96% function matchBiolage Full Rescue Shampoo vs Total Results High Amplify Volumizing ShampooMatrix · 96% function matchHydra Source Shampoo for Dry Hair vs Biolage Ultra HydraSource ShampooBiolage · 96% function matchBiolage Full Rescue Shampoo vs Extreme Length ShampooRedken · 96% function matchHydra Source Shampoo for Dry Hair vs Ultra Hydra Source ShampooBiolage · 96% function match

Biolage Full Rescue Shampoo · Hydra Source Shampoo for Dry Hair · All shampoos in the library

How this page was made

  • This page is assembled from the same researched records the individual product pages render: identity, each ingredient list as printed, each brand's own claims, dated price observations, and review themes written in our researchers' own words. Nothing on it is written per comparison.
  • We do not rank these against each other. Which of them suits you depends on your hair, and that is what the consultation works out.
  • The formula similarity percentage is a stored, precomputed number: position-weighted overlap of the two ingredient lists blended with agreement on the attributes we derive. It measures how alike two formulas are, not how well either works.
  • The value band is a fixed label over two stored numbers: this product’s cost per ounce as a percentile of every product of this type we have priced, each at the size it is most often sold in, and how many products we score as doing the same job cost at least a quarter less per ounce.
  • The "Is this right for you?" panel reads only your own consultation answers, and it applies exactly the filters our recommendation engine applies. It is computed when you load the page and is never stored on it.
  • 9 sources were consulted across the products on this page.
  • Ingredient order tells you relative amount only above roughly 1%. Prices are observations on the dates shown and change without notice. We do not sell these products and take no placement fees.
  • This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.

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